Quote:
Originally Posted by Dissident
Todd,
Being a data kind of guy, I ran some quickie calculations for the potential flow (internal leaks) of the EDM lifters and the groove thing in the lifter bores. I used 50psi as that is the pressure number you mentioned.The EDM lifters will flow approx 0.0371gpm (each) at 50psi. The grooves in the lifter bores will flow approx 0.264gpm (each) at 50psi. Doesn't sound like much until you toss in each number times the 16 leak paths. Total flow at 50psi = 4.8176gpm! WOW. 
At that rate of flow, 5qts (1.25gal) will cycle very quickly. The grooves themselves go through 4.224gpm so I suspect that is the major offender and caused the earlier ugly bearings.
Regards,HB2  Dissident |
Actually, I think your figures are pretty close. Lifter bore clearance is also a component. Todd mentioned that one of the lifter bores had two grooves in it. -Al